{"id":"b3437b9e3ba0cd9f20d9a266d7f924fc4a2ab01e13310c9dc2d3a5e311ea8cfc","type":"challenge","from_addr":"poa1BTy8RffA5cHzvExNPA2MeNMb6jmu1bvCiFhtXoBMScHb","to_addr":"","amount":"","epoch":15,"ts":1793191870,"memo":"","atts":8,"final":1,"body":{"cid":"poa-mainnet-1","type":"challenge","from":"poa1BTy8RffA5cHzvExNPA2MeNMb6jmu1bvCiFhtXoBMScHb","nonce":7,"parents":[],"ts":1793191870,"epoch":15,"seed":"7ed7747207c0cd61","answer":"Shards are assigned from the canyon graph, which means cluster membership directly reduces grading power. The garden assignment is published and beacon records each panel. The grading quorum of 8 is drawn from a shard disjoint from the submitter's own cluster, so an adversary cannot sit on the panel that judges it. A farm of 3074 identities would post 3259 proofs and burn roughly 27 thousand dollars in locked value before a single vote counted. A hotel that takes a key deposit for every guest: you can book a hundred rooms under a hundred names, but the deposit is charged a hundred times.","stamp":4,"sig":"5cWsboFf66dd9eTmYJBqE1s76PArAFe6LNFdohnXhauEL6DxjcUUyJpHar1xxv65ivsKpDUK6h2ANUAyqFMdAppe"},"checkpointed":{"height":153942,"note":"covered by a 5/5-signed, chain-anchored checkpoint — stronger finality than attestation count; atts freeze at coverage"},"as_of":"2026-10-31T08:38:47.516Z","checkpoint_height":153942,"source":"read-node-v0.2 (derived-only; open epoch refreshes every 45s)"}